[Boatanchors] LED Replacements for #47 bulbs

Garey Barrell k4oah at mindspring.com
Tue Feb 8 16:44:13 EST 2011

I too got my order from cointaker.  I got only the 'warm white', looking 
for what 'should' be a '#47 color'.

In a Drake T-4X with recently replaced blue filter and white diffuser 
the dial bulb is pretty good.  There is a 'bit' of a hot-spot in the 
center of the dial (out the end of the bulb) but not objectionable.  The 
meter light, which depends more upon 'side' light is somewhat dimmer, 
but adequate.  The color balance is good.  The 'bulb' itself is kind of 
milky in appearance and does a good job diffusing the light, but still a 
small hot-spot.

Overall I'd say they are acceptable replacements in the Drake 4 Line.

73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs

Bob Jackson wrote:
> The LEDs from cointaker.com have arrived. Here's my very subjective 
> evaluation ...
>     The blue, red and green ones have the most intense color and look
>     great as dial lamps.
>     The purple ones give off a "sexy blue" light also pretty intense.
>     The orange one is the next in color saturation with yellow and
>     pink being the least saturated.
>     Both the "cool white" (faint bluish tint) and the "normal white"
>     give off lots of illumination, but seemingly not quite as much as
>     the #47 bulb.
> Also of note is the fact that the actual "bulb" portion of the LEDs 
> isn't as tall/long as the 47 bulb's. This means that iin some mounts, 
> like the horizontal one in my HQ-140-X, there may need to be an 
> adjustment to the lamps position to fully illuminate the dial. Mounts 
> that point the bulb at the dial should be OK without any adjustment. 
> The metal base of the LED lamps is the same as the 47 bulbs so that 
> exchanging them is easy.
> At only 69 cents each and simple 1st class postage for shipping, this 
> was cheap and easy FUN!
> Bob  AG5X

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